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自1975年以来,为解决45瓩箱形电炉炉底板的材质问题进行了试验,从现有生产条件,炉底板的工作情况和资源条件等方面综合考虑,并分析了铸铁在高温下破损的原因,认为,提高铸铁耐热性,可以造应电炉在950℃最高工作温度下的需要。就此,我们用冲天炉和坩锅炉联合熔炼出“铝—硅—铬稀土耐热铸铁”,解决了炉底板的抗氧化性和抗生长性。然后,针对此合金铸铁的特性,改善工艺,进一步提高了成品率,从装炉使用情况表明,此种材质可以适合于制造炉底板之类的耐热件。材质的选择耐热铸铁的基本要求,是在高温下,具有较好的抗氧化性,抗生长性,抗热冲击性和高
Since 1975, a trial has been carried out to solve the problem of the material of 45 瓩 box-type electric furnace floor. Considering the existing production conditions, the working conditions and resource conditions of the furnace floor, the causes of the damage of cast iron at high temperature have been analyzed , That improve the heat resistance of cast iron, you can create the electric furnace at the highest operating temperature of 950 ℃. In this regard, we use the cupola furnace and crucible boiler smelting out “aluminum - silicon - chromium rare earth heat-resistant cast iron” to solve the furnace floor oxidation resistance and anti-growth. Then, according to the characteristics of this alloy cast iron, improve the process, to further improve the yield, from the use of the furnace shows that this material can be suitable for the manufacture of heat-resistant pieces such as furnace floor. Material Selection The basic requirements of heat-resistant cast iron is at high temperatures, with good oxidation resistance, anti-growth, thermal shock resistance and high